Abstract—Silver doped bismuth oxyiodide (Ag-doped BiOI) microsflowers have been successfully synthesized by a simple microwave irradiation method. The optimum condition was synthesized with pH 3 at 180 W for 3 h. The contents of Ag dopant were in the range 0.0-3.0 mol%. The phase purity and crystallinity of the product were characterized by XRD technique. It indicated that the products are pure tetragonal BiOI phase. The morphologies of series Ag-,doped BiOI were microflowers, diameter about 700-1,000 μm which investigated by SEM and TEM technique. Then, 0.0-3.0 mol% Ag-doped BiOI were studied the photocatalytic properties by degradation of methylene blue (MB) solution under daylight for 100 min. The decolorization efficiency (%) of 0.0, 0.5, 1.0, 2.0, and 3.0 mol% Ag-doped were 81.89, 96.46, 96.8, 92.43, and 90.59 %, respectively. So, it can be concluded that Ag
+ ion has been prevented electro-hole recombination, the photocatalytic property was improved. The research has many advantages about synthesized Ag-doped BiOI by a simply, fast, and low cost method. Moreover, as-synthesized Ag-doped BiOI can apply in waste water treatment, degradation of organic pollutant and so on.
Index Terms—BiOI, silver doped, photocatalytic.
N. Ekthammathat is with the Program of Chemistry, Faculty of Science and Technology, Bansomdejchaopraya Rajabhat University, Bangkok 10600, Thailand (corresponding e-mail: nueng_omam@hotmail.com).
P. Pornharuthai is with the Program of Tool and Die Engineering, Faculty of science and Technology, Bansomdejchaophraya Rajabhat University, Bangkok 10600, Thailand (e-mail: lava_pp10@hotmail.com).
A. Phuruangrat is with the Department of Materials Science and Technology, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand (e-mail: phuruangrat@hotmail.com).
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Cite: Nuengruethai Ekthammathat, Pornchai Pornharuthai, and Anukorn Phuruangrat, "Microwave Irradiation Synthesis and Characterization of Silver Doped Bismuth Oxyiodide Microflowers with Enhanced Daylight Photocatalytic Performance," International Journal of Materials, Mechanics and Manufacturing vol. 6, no. 3, pp. 238-242, 2018.
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